module teapo.storage.attached.indexedDB {

​

  export class StorageAccess implements attached.StorageAccess {

​

    constructor(private _db: IDBDatabase) {

    }

​

    update(

      byFullPath: PropertiesByFullPath,

      timestamp: number,

      callback: (error: Error) => void): void {

​

      var transaction = this._db.transaction(['files', 'metadata'], 'readwrite');

      transaction.onerror = (errorEvent) => callback(wrapErrorEvent(errorEvent, 'update: transaction'));

      var filesStore = transaction.objectStore('files');

      var outstandingRequests = 1;

​

      function oneError(errorEvent: ErrorEvent, moreDescription) {

        if (!outstandingRequests) return;

​

        outstandingRequests = 0;

        callback(wrapErrorEvent(errorEvent, moreDescription));

      }

​

      function oneCompleted() {

        if (!outstandingRequests) return;

​

        outstandingRequests--;

        callback(null);

      }

​

      for (var fullPath in byFullPath) if (byFullPath.hasOwnProperty(fullPath)) {↔}

​

    }

​

    read(

      fullPath: string,

      callback: (error: Error, properties: { [property: string]: string; }) => void): void {

​

      var transaction = this._db.transaction('files');

      transaction.onerror = (errorEvent) => callback(wrapErrorEvent(errorEvent, 'read: transaction'), null);

      var filesStore = transaction.objectStore('files');

      var getRequest = filesStore.get(fullPath);

      getRequest.onerror = (errorEvent) => callback(wrapErrorEvent(errorEvent, 'read: get(' + fullPath +')'), null);

      getRequest.onsuccess = (event) => {

​

        var fileData: FileData = getRequest.result;

​

        callback(null, fileData.properties);        

      };

    }

​

    private _updateEditedUTC(now: number, transaction: IDBTransaction, callback: (errorEvent: ErrorEvent) => void) {

      var metadataStore = transaction.objectStore('metadata');

​

      var metadataData = { property: 'editedUTC', value: Date.now() };

      var putMetadata = metadataStore.put(metadataData);

      putMetadata.onerror = (errorEvent) => callback(errorEvent);

      putMetadata.onsuccess = (event) => callback(null);